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Sqlite database doesn't work on Unity games build to Android Devices

Discussion in 'Android' started by ricardohenrique996, Jan 30, 2016.

  1. ricardohenrique996

    ricardohenrique996

    Joined:
    Dec 30, 2015
    Posts:
    5
    I'm using the Sqlite as Unity Game database and works on Unity Editor, but when I build to Android Devices the Game can't access the database, what can I do to make the script works also on Android Devices ?

    Programs/Versions used:
    - Unity 5.3.1f1
    - Sqlite Precompiled Binaries for Windows 64 (sqlite-dll-win64-x64-3100200.zip
    (688.01 KiB))

    Folder Structure:

    -- Assets/Database/MyDataBase.db
    -- Assets/Scripts/PerguntaScript.cs
    -- Assets/Plugins/Mono.Data.Sqlite.dll
    -- Assets/Plugins/sqlite3.def
    -- Assets/Plugins/sqlite3.dll
    -- Assets/Plugins/System.Data.dll

    PerguntaScript.cs (Script that access the Sqlite database)

    using UnityEngine;
    using UnityEngine.UI;
    using System.Collections;
    using System;
    using System.Data;
    using Mono.Data.Sqlite;

    public class PerguntaScript : MonoBehaviour {

    private string connectionString;

    void Start () {
    connectionString = "URI=file:" + Application.dataPath + "/Database/DoencasDB.db";
    }

    private void GetPergunta(){
    using(IDbConnection dbConnection = new SqliteConnection(connectionString)){
    dbConnection.Open();

    using(IDbCommand dbCommand = dbConnection.CreateCommand()){
    string sqlQuery = "SELECT * FROM " + sqliteTabelasPerguntas[sqliteIndexTabelaPergunta] + " WHERE doenca_id=@id LIMIT 1";
    dbCommand.Parameters.Add(new SqliteParameter("@Id", doencaId));
    dbCommand.CommandText = sqlQuery;

    using(IDataReader reader = dbCommand.ExecuteReader()){
    while(reader.Read()){
    pergunta = reader.GetString(1);
    alternativasId[0] = reader.GetInt32(3);
    alternativasId[1] = reader.GetInt32(4);
    alternativasId[2] = reader.GetInt32(5);
    alternativasId[3] = reader.GetInt32(6);
    alternativaCorretaId = reader.GetInt32(7);
    }
    dbConnection.Close();
    reader.Close();
    }
    }
    }
    }​
     
    Last edited: Jan 30, 2016
  2. TimGS

    TimGS

    Joined:
    Apr 24, 2014
    Posts:
    63
  3. bibalexwalid

    bibalexwalid

    Joined:
    Mar 28, 2019
    Posts:
    2
    Tutorial SQLite Unity3d 2018 or hegher( Android , Windows Phone , Windows , IOS, WINRT )
    How to Connection Database Sqlite how to Create Table , Select , Insert , Update , Delete , Search

    How to read data from on unity Solving all error in unity for assembly reference:
    1- error "The type or namespace name Data' does not exist in the namespace 'Mono'. Are you missing an assembly reference?"
    2- and error "The type or namespace name MONO' does not exist in the namespace Data'. Are you missing an assembly reference?"
    - using Mono.Data.Sqlite;
    - using System;
    - using System.Data;
    - using System.IO;
    - using UnityEngine.UI;

    learning how:
    * SQLite Admin to create database and tables .......
    * SQLite DLL to support unity .s3db extension and compile on unity for windows 32bit or 64bit.

    Github example : https://github.com/walidabazo

    Video